package com.itheima.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.common.R;
import com.itheima.entity.Employee;
import com.itheima.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {

//①. 将页面提交的密码password进行md5加密处理, 得到加密后的字符串
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

//②. 根据页面提交的用户名username查询数据库中员工数据信息
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
        // ③. 如果没有查询到, 则返回登录失败结果
        if (emp == null) {
            return R.error("登陆失败");
        }
        // ④. 密码比对，如果不一致, 则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("登陆失败");
        }
        // ⑤. 查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已被禁用");
        }
        //⑥. 登录成功，将员工id存入Session, 并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);

    }

    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {

        request.getSession().removeAttribute("employee");
        return R.success("推出成功");
    }

//新增
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {

        log.info("新增员工，员工信息:{}", employee.toString());
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        Long empId = (Long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    //员工信息分页查询

    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page={},pageSize={},name={}", page, pageSize, name);
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);

    }

    //启用/禁用员工账号
    @PutMapping
    public R<String>update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

//        Long empId = (Long) request.getSession().getAttribute("employee");
//
//        employee.setUpdateUser(empId);
//        employee.setUpdateTime(LocalDateTime.now());

        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    //编辑员工信息
    @GetMapping("/{id}")
    public R<Employee>getById(@PathVariable Long id ){

        log.info("根据ID查询员工信息");

        Employee employee = employeeService.getById(id);
        if(employee != null){
            return R.success(employee);
        }
            return R.error("没有查到对应的员工");
    }
}


